1.12.2. Structural Response During Resonance

Try these first

1. 1.

   What is resonance in structural engineering?

   Hint

   Think about how musical instruments resonate.

2. 2.

   What is the effect of resonance on a structure?

   Hint

   Consider what happens when a swing is pushed at the right moment.

3. 3.

   What happens during resonance?

   • Decrease in amplitude
   • Significant amplification of oscillations
   • No effect on structure

   Hint

   Think about how a child swings higher with every push.

4. 4.

   True or False: Adding damping to a structure reduces the risk of damage during resonance.

   • True
   • False

   Hint

   Consider how dampers in buildings work.

5. 5.

   Analyze a scenario where a building built with poor damping characteristics is subjected to severe ground motion close to its natural frequency. Discuss the expected outcomes.

   Hint

   Consider how the lack of damping influences the amplitude of vibrations.

6. 6.

   Design a basic mitigation strategy for a multi-storey building located in an earthquake-prone area. Include considerations for resonance.

   Hint

   What materials and methods can be employed to increase each aspect?